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SPF format?  RSS feed

 
Greenhorn
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I am tring to find out the data inside SPF files. SPF files hold information on DNA Sequencing data used in bioinformatics.

I think the SPF file seems to be programmed with either a header structure, or a tag-type format, or maybe its done using serialized Java objects.

I have attached a copy of the SPF file, any information would be helpful and greatly appreciated on how I can read the contents of this file. I can e-mail an example of the file if that would help.

Thanks

- James
 
Java Cowboy
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Did you try searching Google for "spf file format"? The extension "spf" seems to be in use for different things according to what I find with Google: SPF - SPIFF, Still Picture Interchange File Format, Slide Presentation File (EnerGraphics), ...

Where do you get these files from? I think it would be best to ask the people who give you these files what the details of the format are. It's very hard to reverse-engineer a file format if you have almost no idea of what the file contains.
[ December 01, 2006: Message edited by: Jesper Young ]
 
james cassidy
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The problem is that SPF files are generated from third Party software called Sequencer 4.7 found at http://www.genecodes.com/downloads/PC/Sequencher4.7Demo.zip. They create these files for working out DNA sequences, the problem is that I can see whats in the SPF files by using their software but its far too expensive to buy.
 
james cassidy
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If users wish to see what im on about you can download the Sequencer 4.7 i mentioned above, it has information stored in the
SCF format files imported into the projects, plus other information (Some of which we do not need to read).

Also if you send me your e-mail in the private message area I can send you a copy of the all the files used to create the SPF file!

Thanks
-James
 
Jesper de Jong
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Aha, so you want to reverse engineer a proprietary file format.

First of all, if it's a proprietary format, the company that sells the software might not like it that you're reverse engineering their file format. So what you want to do is maybe not legal.

Second, if you really want to do this you must probably be an expert in the field of genes etc., otherwise you have no idea what you're looking at. Most people on the forum here are not experts in that field.

I don't think you're going to get a solution to your problem here.
 
Ranch Hand
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ask the people who built the software that generates the files.
If they want others to read and write their format they'll have a document for you describing the format in detail.
If not you're on your own, and should not expect help as reverse engineering is illegal in many countries and generally frowned upon by honest people even where not as a breach of manners (it's like sneaking into your neighbours' house and reading their mail when they're asleep).
 
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